Bang Bang

Bang Bang was a brand of "heater" (gun) on Sigma Iotia II. They advertised on a radio program in which songs were played based on listeners' requests. Their slogan was "the sweetest little automatic in the world".

The radio announcer promoting "Bang Bang" was the voice of James Doohan. His Scottish accent creeps into the dialogue in the last word "world", just before Spock shuts off the broadcast. (The Star Trek Compendium)